The larva emerged from the egg and began drifting in the gentle current. It was a bilaterally symmetrical body that recalled a small chordate, but it wasn't. The ciliated body allowed it to swim to some extent but within a few hours it settled to the sea floor and a remarkable change occurred. It began to develop an odd five-fold symmetry. That placed the organism in the lineage of the phylum echinodermata.
The Strangers in a Strange Land continued their journey through Death Valley National Park last month. We had spent some time observing and interpreting a unique outcrop east of Shoshone, and after a short break in the urban nightma... Read Post
Death Valley is a Strange Land, and we were strangers within it. Even the volcanoes are kind of odd, at least if you think volcanoes are big cones that put out lava flows and clouds of seething ash. The presence of the volcanoes is ... Read Post